The "i" button disappears when a name list is scrolled down with the mouse wheel

Steps to reproduce:
1. Start SL viewer, login.
2. Open Group Profile for any group you are a member of. The list of member should be long enough to have a vertical scroll.
3. Expand General Tab.
4. Hold mouse over member's name until the "i" button appears.
5. Scroll down the list with the mouse wheel without moving the mouse pointer.

Actual Result: the "i" button disappears when the list is scrolled down.
Expected Result: the "i" button is visible and shows the inspector for the underlying member if clicked.